The shocking death of Jared Harris' character in the June 3 episode of Mad Men caught many viewers off guard -- including Harris' own agents.

The veteran British actor, 50, went to unusual lengths to avoid the hubbub surrounding such stars as Sean Bean (Game of Thrones) and Jon Bernthal (The Walking Dead), who tipped their characters' deaths by taking new jobs.

"There was a pilot season that came and went that I didn't put myself up for because, obviously, if I was hired to do another show, people would know that something had happened," Harris tells THR.

Harris signed a three-year option with Mad Men studio Lionsgate after last season, but his agent Brad Schenck at Paradigm watched season five with increasing trepidation as Harris' Lane Pryce became troubled.